A method for performing transmyocardial revascularization (TMR) comprises the steps of creating an incision in an outer portion of heart tissue of a patient and creating a channel in the patient's myocardium through the incision by advancing a channel creating device into the myocardium beyond the depth...http://www.google.com/patents/US5947989?utm_source=gb-gplus-sharePatent US5947989 - Method and apparatus for transmyocardial revascularization
